IOS images on sup-bootdisk

[ivanka_busta]

Hi,

I have this command configured on a Cisco 6506-E: boot system flash sup-bootdisk: 

The IOS image is on the sup-bootdisk.

6500#dir sup-bootdisk:
Directory of sup-bootdisk:/

1 -rw- 74689508 Jan 4 2009 01:26:48 +01:00 s72033-ipservicesk9_wan-mz.122-33.SXH4.bin
2 -rw- 33554432 Jan 4 2009 03:49:32 +01:00 sea_log.dat
3 -rw- 32193 Sep 9 2015 11:50:36 +02:00 tftp

512106496 bytes total (403824640 bytes free)

I need to upgrade the ios image. Can I have two different IOS images on the sup-bootdisk? In that case, How can I tell the switch which one it must use to boot?

Thanks in advance.

[Leo Laohoo]

Can I have two different IOS images on the sup-bootdisk?

Yes you can. 

In that case, How can I tell the switch which one it must use to boot?

Important:  Verify the config-registry value is 0x2102. 

Use this: 

config t
 boot system flash bootflash:NEW_IOS.bin
 boot system flash bootflash:OLD_IOS.bin 
 boot system flash bootflash:
end
wr

[ivanka_busta]

Thank you for your quick response.

There is something that I don't understand. My old IOS is in sup-bootdisk, it isn't in bootflash. In fact, my bootflash is empty:

6500#dir bootflash:
Directory of bootflash:/

No files in directory

Is it possible to use those commands with sup-bootdisk instead of bootflash:?

Are these commands correct?

boot system flash sup-bootdisk:NEW_IOS.bin
boot system flash sup-bootdisk:OLD_IOS.bin
boot system flash bootdisk:

Thanks.

[Leo Laohoo]

Yes, change my recommendation of "bootflash:" to "sup-bootdisk:".